git: cb2657c9622a - stable/14 - netinet6 tests: Add a regression test for default router handling
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Date: Thu, 08 Aug 2024 19:11:48 UTC
The branch stable/14 has been updated by markj: URL: https://cgit.FreeBSD.org/src/commit/?id=cb2657c9622abb416ba90239e6f652147e7b62dc commit cb2657c9622abb416ba90239e6f652147e7b62dc Author: Mark Johnston <markj@FreeBSD.org> AuthorDate: 2024-07-25 21:01:11 +0000 Commit: Mark Johnston <markj@FreeBSD.org> CommitDate: 2024-08-08 19:11:34 +0000 netinet6 tests: Add a regression test for default router handling This serves as a regression test for commit a48df53e4249. Reviewed by: bz, allanjude MFC after: 2 weeks Sponsored by: Klara, Inc. Sponsored by: Bell Tower Integration Differential Revision: https://reviews.freebsd.org/D46136 (cherry picked from commit feda329622bc77ab64ae5f0bf852743f4a037616) --- tests/sys/netinet6/Makefile | 34 +++++++++-------- tests/sys/netinet6/ndp.sh | 92 ++++++++++++++++++++++++++++++++++++++++++--- tests/sys/netinet6/ra.py | 38 +++++++++++++++++++ 3 files changed, 143 insertions(+), 21 deletions(-) diff --git a/tests/sys/netinet6/Makefile b/tests/sys/netinet6/Makefile index 82e84859ecbc..46f6f26115fe 100644 --- a/tests/sys/netinet6/Makefile +++ b/tests/sys/netinet6/Makefile @@ -5,28 +5,30 @@ TESTSDIR= ${TESTSBASE}/sys/netinet6 FILESDIR= ${TESTSDIR} ATF_TESTS_PYTEST= test_ip6_output.py -ATF_TESTS_SH= \ - exthdr \ - mld \ - scapyi386 \ - redirect \ - divert \ - forward6 \ - output6 \ - lpm6 \ - fibs6 \ - ndp \ - proxy_ndp +ATF_TESTS_SH= exthdr \ + mld \ + scapyi386 \ + redirect \ + divert \ + forward6 \ + output6 \ + lpm6 \ + fibs6 \ + ndp \ + proxy_ndp + TEST_METADATA.output6+= required_programs="python" -${PACKAGE}FILES+= exthdr.py -${PACKAGE}FILES+= mld.py -${PACKAGE}FILES+= scapyi386.py -${PACKAGE}FILES+= redirect.py +${PACKAGE}FILES+= exthdr.py \ + mld.py \ + scapyi386.py \ + ra.py \ + redirect.py ${PACKAGE}FILESMODE_exthdr.py= 0555 ${PACKAGE}FILESMODE_mld.py= 0555 ${PACKAGE}FILESMODE_scapyi386.py=0555 +${PACKAGE}FILESMODE_ra.py=0555 ${PACKAGE}FILESMODE_redirect.py=0555 TESTS_SUBDIRS+= frag6 diff --git a/tests/sys/netinet6/ndp.sh b/tests/sys/netinet6/ndp.sh index eddd49112421..038a640f331e 100755 --- a/tests/sys/netinet6/ndp.sh +++ b/tests/sys/netinet6/ndp.sh @@ -25,7 +25,6 @@ # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. # -# . $(atf_get_srcdir)/../common/vnet.subr @@ -36,6 +35,7 @@ ndp_add_gu_success_head() { } ndp_add_gu_success_body() { + local epair0 jname vnet_init @@ -74,6 +74,7 @@ ndp_del_gu_success_head() { } ndp_del_gu_success_body() { + local epair0 jname vnet_init @@ -102,13 +103,94 @@ ndp_del_gu_success_cleanup() { vnet_cleanup } +ndp_if_up() +{ + local ifname=$1 + local jname=$2 -atf_init_test_cases() + if [ -n "$jname" ]; then + jname="jexec ${jname}" + fi + atf_check ${jname} ifconfig ${ifname} up + atf_check ${jname} ifconfig ${ifname} inet6 -ifdisabled + while ${jname} ifconfig ${ifname} inet6 | grep tentative; do + sleep 0.1 + done +} + +ndp_if_lladdr() { + local ifname=$1 + local jname=$2 - atf_add_test_case "ndp_add_gu_success" - atf_add_test_case "ndp_del_gu_success" + if [ -n "$jname" ]; then + jname="jexec ${jname}" + fi + ${jname} ifconfig ${ifname} inet6 | \ + awk '/inet6 fe80:/{split($2, addr, "%"); print addr[1]}' } -# end +atf_test_case "ndp_slaac_default_route" "cleanup" +ndp_slaac_default_route_head() { + atf_set descr 'Test default route installation via SLAAC' + atf_set require.user root + atf_set require.progs "python" +} + +ndp_slaac_default_route_body() { + local epair0 jname lladdr + + vnet_init + + jname="v6t-ndp_slaac_default_route" + + epair0=$(vnet_mkepair) + vnet_mkjail ${jname} ${epair0}a + + ndp_if_up ${epair0}a ${jname} + ndp_if_up ${epair0}b + atf_check jexec ${jname} ifconfig ${epair0}a inet6 accept_rtadv + + # Send an RA advertising a prefix. + atf_check -e ignore python $(atf_get_srcdir)/ra.py \ + --sendif ${epair0}b \ + --dst $(ndp_if_lladdr ${epair0}a ${jname}) \ + --src $(ndp_if_lladdr ${epair0}b) \ + --prefix "2001:db8:ffff:1000::" --prefixlen 64 + + # Wait for a default router to appear. + while [ -z "$(jexec ${jname} ndp -r)" ]; do + sleep 0.1 + done + atf_check -o match:"^default[[:space:]]+fe80:" \ + jexec ${jname} netstat -rn -6 + + # Get rid of the default route. + jexec ${jname} route -6 flush + atf_check -o not-match:"^default[[:space:]]+fe80:" \ + jexec ${jname} netstat -rn -6 + + # Send another RA, make sure that the default route is installed again. + atf_check -e ignore python $(atf_get_srcdir)/ra.py \ + --sendif ${epair0}b \ + --dst $(ndp_if_lladdr ${epair0}a ${jname}) \ + --src $(ndp_if_lladdr ${epair0}b) \ + --prefix "2001:db8:ffff:1000::" --prefixlen 64 + while [ -z "$(jexec ${jname} ndp -r)" ]; do + sleep 0.1 + done + atf_check -o match:"^default[[:space:]]+fe80:" \ + jexec ${jname} netstat -rn -6 +} + +ndp_slaac_default_route_cleanup() { + vnet_cleanup +} + +atf_init_test_cases() +{ + atf_add_test_case "ndp_add_gu_success" + atf_add_test_case "ndp_del_gu_success" + atf_add_test_case "ndp_slaac_default_route" +} diff --git a/tests/sys/netinet6/ra.py b/tests/sys/netinet6/ra.py new file mode 100644 index 000000000000..44814418da48 --- /dev/null +++ b/tests/sys/netinet6/ra.py @@ -0,0 +1,38 @@ +#- +# SPDX-License-Identifier: BSD-2-Clause +# +# Copyright (c) 2024 Klara, Inc. +# + +import argparse +import scapy.all as sp +import sys + +# +# Emit a router advertisement with the specified prefix. +# +def main(): + parser = argparse.ArgumentParser("ra.py", + description="Emits Router Advertisement packets") + parser.add_argument('--sendif', nargs=1, required=True, + help='The interface through which the packet will be sent') + parser.add_argument('--src', nargs=1, required=True, + help='The source IP address') + parser.add_argument('--dst', nargs=1, required=True, + help='The destination IP address') + parser.add_argument('--prefix', nargs=1, required=True, + help='The prefix to be advertised') + parser.add_argument('--prefixlen', nargs=1, required=True, type=int, + help='The prefix length to be advertised') + + args = parser.parse_args() + pkt = sp.Ether() / \ + sp.IPv6(src=args.src, dst=args.dst) / \ + sp.ICMPv6ND_RA(chlim=64) / \ + sp.ICMPv6NDOptPrefixInfo(prefix=args.prefix, prefixlen=args.prefixlen) + + sp.sendp(pkt, iface=args.sendif[0], verbose=False) + sys.exit(0) + +if __name__ == '__main__': + main()